Hi Dominic Winterstein,
This forum thread is in the RadPanelBar for WinForms control. It seems you are asking for the RadPanelBar for ASP.NET Ajax.
I suggest that you check the Persist State in cookie
and Programmatic State Persistence
RadPanelBarItem class has a property Selected
which determines whether the item will be selected.
If you have any additional question on the Ajax controls - please use the appropriate forums.
Thank you for your understanding.
the Telerik team
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